Coffee maker



FIG. 1 is a front and left side perspective view of a coffee maker showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a front elevational view thereof with the warmer plate in the raised position.

The broken line showing of the filter basket and the beverage decanter in FIG. 2 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a coffee maker, as shown and described. 